We’re very pleased to announce that Performance Distributors—maker of the DUI, or Davis Unified Ignition—will be sponsoring the ignition distributor category of the 2013 AMSOIL Engine Masters Challenge. We’ve used DUI distributors in many of our high-powered project cars at Popular Hot Rodding, and they’ve always proven powerful and reliable, year in, year out. Their robust HEI construction is designed to operate reliably up to 9,000 rpm, and the DUI’s performance is further aided by a high-output, high-dwell Dyna-Module, an integrated high-output coil, a no-resistance rotor bushing, and a hand-fitted advance system. Racers can also opt up for the instant timing knob, which allows fast and accurate changes to ignition timing without the need for a timing light. For accuracy, spark output, simplicity, and outright reliability, there are few equals in the ignition distributor business, and competitors in the AMSOIL Engine Masters Challenge will be happy to know they can depend on DUI for their competition needs. DUI distributors are available for small-block and big-block Chevy, Buick V-8, Oldsmobile V-8, Pontiac V-8, Cadillac V-8, Ford small-block (Windsor & Cleveland), Ford FE, Ford 429/260, Chrysler small-block, Chrysler big-block (low-deck and RB), Chrysler Hemi (first- and second-gen), and AMC V-8.